and mut bound to mut methods on signals

packages/hooks/src/use_coroutine.rs

@@ -125,7 +125,7 @@ impl<T> Coroutine<T> {
     /// Restart this coroutine
     ///
     /// Forces the component to re-render, which will re-invoke the coroutine.
-    pub fn restart(&self) {
+    pub fn restart(&mut self) {
         self.needs_regen.set(true);
         self.task().stop();
     }